如何操作桌面上的图标

如何操作桌面上的图标，并取得图标的信息

2012 年 2 月 19 日 | Filed under: Windows程序设计 and tagged with: Windows API桌面图标是放在 SysListView32这个列表中，所以要想操作图标，要先得到了它的句柄，然后可以遍历它得到各桌面图标的句柄,下面的代码实现把桌面上的图标排成一个圆：

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2 3 4 5 6 7 8 9 1 0 1 1 1 2 1 3 1 4 1 5 1 6 1 7 1 8 1 9 2 0 2 1 2 2 2void C***::OnSetDeskIcon()

{

HWNDhwndParent = ::FindWindow("Progman","Program Manager");

HWNDhwndSHELLDLL_DefView = ::FindWindowEx( hwndParent,

NULL,"SHELLDLL_DefView", NULL );

HWNDhwndSysListView32 = ::FindWindowEx( hwndSHELLDLL_DefView, NULL,"SysListView32","FolderView");

intNm = ListView_GetItemCount( hwndSysListView32 );

//取得图标的数目

for(inti = 0; i < Nm; i++ )

{

intx = 400 + 150*cos( i * 2 * 3.1415926/Nm );

inty = 400 + 150*sin( i * 2 * 3.1415926/Nm );

::SendMessage( hwndSysListView32, LVM_SETITEMPOSITION, i,

MAKELPARAM( x,y));

}

ListView_RedrawItems(hwndSysListView32, 0,

ListView_GetItemCount(hwndSysListView32) - 1);

::UpdateWindow(hwndSysListView32);

}

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操作了图标，那么怎样得到图标的信息呢，如图标的名称，大小，位置等等，在上一篇文章Stealing Program's Memory 中提到了怎样取得别的进程中的信息，下面的代码实现了取得图标名称、位置、大小的功能：

1 2 3 4 5 6 7 8 9 10 11 12 13 void C***::OnSetDeskIcon()

{

HWNDhDestTop;

hDestTop = ::FindWindow("progman", NULL);

hDestTop = ::FindWindowEx(hDestTop, 0,"shelldll_defview",

NULL);

hDestTop = ::FindWindowEx(hDestTop, 0,"syslistview32",

NULL);

intcount=(int)::SendMessage( hDestTop, LVM_GETITEMCOUNT,

0, 0);

LVITEM lvi, *_lvi;

charitem[512], subitem[512];

char*_item, *_subitem;

unsignedlongpid;

HANDLEprocess;

GetWindowThreadProcessId( hDestTop, &pid);

process=OpenProcess(PROCESS_VM_OPERATION|PROCESS_VM_READ

14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 |PROCESS_VM_WRITE|PROCESS_QUERY_INFORMATION, FALSE, pid);

_lvi=(LVITEM*)VirtualAllocEx(process, NULL,sizeof (LVITEM), MEM_COMMIT, PAGE_READWRITE);

_item=(char*)VirtualAllocEx(process, NULL, 512, MEM_COMMIT, PAGE_READWRITE);

_subitem=(char*)VirtualAllocEx(process, NULL, 512, MEM_COMMIT, PAGE_READWRITE);

RECT rc;

rc.left = LVIR_ICON;

//这个一定要设定 可以去看MSDN 关于LVM_GETITEMRECT 的说明 RECT* _rc =(RECT*)VirtualAllocEx( process, NULL,sizeof (RECT), MEM_COMMIT, PAGE_READWRITE);

hTextMax=512;

for (inti=0; i< 10; i++)

{

lvi.iSubItem=0;

lvi.pszText=_item;

WriteProcessMemory(process, _lvi, &lvi,sizeof (LVITEM),

NULL);

::SendMessage( hDestTop, LVM_GETITEMTEXT, (WPARAM)i,

(LPARAM)_lvi);

lvi.iSubItem=1;

lvi.pszText=_subitem;

WriteProcessMemory(process, _lvi, &lvi,sizeof (LVITEM),

NULL);

::SendMessage( hDestTop, LVM_GETITEMTEXT, (WPARAM)i,

(LPARAM)_lvi);

::WriteProcessMemory( process, _rc, &rc,sizeof (rc), NULL); ::SendMessage( hDestTop, LVM_GETITEMRECT, (WPARAM)i,

(LPARAM)_rc);

ReadProcessMemory(process, _item, item, 512, NULL);

ReadProcessMemory(process, _subitem, subitem, 512, NULL);

ReadProcessMemory(process, _rc, &rc,sizeof (rc), NULL);

CString str;

str.Format("LF:%d TP:%d RT:%d BT:%d",

rc.left,rc.top,rc.right,rc.bottom);

AfxMessageBox(str);